test-hostname-util: add assert_se's to make coverity happy

[thirdparty/systemd.git] / man / networkctl.xml

<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">

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<refentry id="networkctl" conditional='ENABLE_NETWORKD'
          xmlns:xi="http://www.w3.org/2001/XInclude">

  <refentryinfo>
    <title>networkctl</title>
    <productname>systemd</productname>

    <authorgroup>
      <author>
        <contrib>Documentation</contrib>
        <firstname>Zbigniew</firstname>
        <surname>Jędrzejewski-Szmek</surname>
        <email>zbyszek@in.waw.pl</email>
      </author>
    </authorgroup>
  </refentryinfo>

  <refmeta>
    <refentrytitle>networkctl</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>networkctl</refname>
    <refpurpose>Query the status of network links</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>networkctl</command>
      <arg choice="opt" rep="repeat">OPTIONS</arg>
      <arg choice="plain">COMMAND</arg>
      <arg choice="opt" rep="repeat">LINK</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para><command>networkctl</command> may be used to introspect the
    state of the network links as seen by
    <command>systemd-networkd</command>.  Please refer to
    <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
    for an introduction to the basic concepts, functionality, and
    configuration syntax.</para>
  </refsect1>

  <refsect1>
    <title>Options</title>

    <para>The following options are understood:</para>

    <variablelist>
      <varlistentry>
        <term>
          <option>-a</option>
          <option>--all</option>
        </term>

        <listitem>
          <para>Show all links with <command>status</command>.</para>
        </listitem>
      </varlistentry>

      <xi:include href="standard-options.xml" xpointer="help" />
      <xi:include href="standard-options.xml" xpointer="version" />
      <xi:include href="standard-options.xml" xpointer="no-legend" />
      <xi:include href="standard-options.xml" xpointer="no-pager" />

    </variablelist>
  </refsect1>

  <refsect1>
    <title>Commands</title>

    <para>The following commands are understood:</para>

    <variablelist>
      <varlistentry>
        <term>
          <command>list</command>
          <optional><replaceable>LINK…</replaceable></optional>
        </term>

        <listitem>
          <para>Show a list of existing links and their status. If no further arguments are specified shows all links,
          otherwise just the specified links. Produces output similar to:

          <programlisting>IDX LINK         TYPE     OPERATIONAL SETUP
  1 lo           loopback carrier     unmanaged
  2 eth0         ether    routable    configured
  3 virbr0       ether    no-carrier  unmanaged
  4 virbr0-nic   ether    off         unmanaged

4 links listed.</programlisting></para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>
          <command>status</command>
          <optional><replaceable>LINK…</replaceable></optional>
        </term>

        <listitem>
          <para>Show information about the specified links: type,
          state, kernel module driver, hardware and IP address,
          configured DNS servers, etc.</para>

          <para>When no links are specified, an overall network status is shown. Also see the option
          <option>--all</option>.</para>

          <para>Produces output similar to:
          <programlisting>
●      State: routable
     Address: 10.193.76.5 on eth0
              192.168.122.1 on virbr0
              169.254.190.105 on eth0
              fe80::5054:aa:bbbb:cccc on eth0
     Gateway: 10.193.11.1 (CISCO SYSTEMS, INC.) on eth0
         DNS: 8.8.8.8
              8.8.4.4</programlisting></para>
        </listitem>

      </varlistentry>

      <varlistentry>
        <term>
          <command>lldp</command>
          <optional><replaceable>LINK…</replaceable></optional>
        </term>

        <listitem>
          <para>Show discovered LLDP (Link Layer Discovery Protocol) neighbors. If one or more link names are specified
          only neighbors on those interfaces are shown. Otherwise shows discovered neighbors on all interfaces. Note
          that for this feature to work, <varname>LLDP=</varname> must be turned on on the specific interface, see
          <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
          details.</para>

          <para>Produces output similar to:
          <programlisting>LINK             CHASSIS ID        SYSTEM NAME      CAPS        PORT ID           PORT DESCRIPTION
enp0s25          00:e0:4c:00:00:00 GS1900           ..b........ 2                 Port #2

Capability Flags:
o - Other; p - Repeater;  b - Bridge; w - WLAN Access Point; r - Router;
t - Telephone; d - DOCSIS cable device; a - Station; c - Customer VLAN;
s - Service VLAN, m - Two-port MAC Relay (TPMR)

1 neighbors listed.</programlisting></para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>
          <command>label</command>
        </term>

        <listitem><para>Show numerical address labels that can be used for address selection.
        This is the same information that
        <citerefentry><refentrytitle>ip-addrlabel</refentrytitle><manvolnum>8</manvolnum></citerefentry>
        shows. See <ulink url="https://tools.ietf.org/html/rfc3484">RFC 3484</ulink>
        for a discussion of address labels.</para>

        <para>Produces output similar to:
        <programlisting>Prefix/Prefixlen                          Label
        ::/0                                  1
    fc00::/7                                  5
    fec0::/10                                11
    2002::/16                                 2
    3ffe::/16                                12
 2001:10::/28                                 7
    2001::/32                                 6
::ffff:0.0.0.0/96                             4
        ::/96                                 3
       ::1/128                                0</programlisting></para>
        </listitem>
      </varlistentry>

    </variablelist>
  </refsect1>

  <refsect1>
    <title>Exit status</title>

    <para>On success, 0 is returned, a non-zero failure code otherwise.</para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para>
      <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
      <citerefentry project='die-net'><refentrytitle>ip</refentrytitle><manvolnum>8</manvolnum></citerefentry>
    </para>
  </refsect1>
</refentry>